[ 15.145812][ T252] ip (252) used greatest stack depth: 23920 bytes left [ 18.392039][ T310] 8021q: 802.1Q VLAN Support v1.8 [ 23.303445][ T380] GACT probability NOT on [ 25.259811][ T415] br10: port 1(veth1.10) entered blocking state [ 25.260477][ T415] br10: port 1(veth1.10) entered disabled state [ 25.261116][ T415] veth1.10: entered allmulticast mode [ 25.261454][ T415] veth1: entered allmulticast mode [ 25.265186][ T415] veth1.10: entered promiscuous mode [ 25.265566][ T415] veth1: entered promiscuous mode [ 25.949257][ T432] br11: port 1(veth1.11) entered blocking state [ 25.949691][ T432] br11: port 1(veth1.11) entered disabled state [ 25.950666][ T432] veth1.11: entered allmulticast mode [ 25.954885][ T432] veth1.11: entered promiscuous mode [ 27.255451][ T462] br10: port 2(veth2.10) entered blocking state [ 27.255915][ T462] br10: port 2(veth2.10) entered disabled state [ 27.256373][ T462] veth2.10: entered allmulticast mode [ 27.256672][ T462] veth2: entered allmulticast mode [ 27.260286][ T462] veth2.10: entered promiscuous mode [ 27.260629][ T462] veth2: entered promiscuous mode [ 27.948136][ T479] br11: port 2(veth2.11) entered blocking state [ 27.948634][ T479] br11: port 2(veth2.11) entered disabled state [ 27.949331][ T479] veth2.11: entered allmulticast mode [ 27.953618][ T479] veth2.11: entered promiscuous mode [ 28.578907][ T491] br10: port 2(veth2.10) entered blocking state [ 28.579651][ T491] br10: port 2(veth2.10) entered forwarding state [ 28.580694][ T491] br10: port 1(veth1.10) entered blocking state [ 28.581139][ T491] br10: port 1(veth1.10) entered forwarding state [ 28.810236][ T496] br11: port 2(veth2.11) entered blocking state [ 28.810716][ T496] br11: port 2(veth2.11) entered forwarding state [ 28.811468][ T496] br11: port 1(veth1.11) entered blocking state [ 28.811883][ T496] br11: port 1(veth1.11) entered forwarding state [ 56.843873][ T622] br11: port 2(veth2.11) entered disabled state [ 56.845202][ T622] br11: port 1(veth1.11) entered disabled state [ 56.974507][ T624] br10: port 2(veth2.10) entered disabled state [ 56.975435][ T624] br10: port 1(veth1.10) entered disabled state [ 57.274809][ T628] veth2.11: left allmulticast mode [ 57.275449][ T628] veth2.11: left promiscuous mode [ 57.276354][ T628] br11: port 2(veth2.11) entered disabled state [ 57.462347][ T630] ================================================================== [ 57.462857][ T630] BUG: KASAN: slab-use-after-free in kobject_put+0xbb/0xd0 [ 57.463347][ T630] Read of size 1 at addr ffff888004dbc6ac by task ip/630 [ 57.463727][ T630] [ 57.463887][ T630] CPU: 0 UID: 0 PID: 630 Comm: ip Not tainted 6.18.0-rc4-virtme #1 PREEMPT(full) [ 57.463895][ T630] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 57.463900][ T630] Call Trace: [ 57.463908][ T630] [ 57.463911][ T630] dump_stack_lvl+0x82/0xc0 [ 57.463923][ T630] print_address_description.constprop.0+0x2c/0x3a0 [ 57.463943][ T630] ? kobject_put+0xbb/0xd0 [ 57.463950][ T630] print_report+0xb4/0x270 [ 57.463955][ T630] ? kobject_put+0xbb/0xd0 [ 57.463960][ T630] ? kasan_addr_to_slab+0x21/0x70 [ 57.463966][ T630] ? kobject_put+0xbb/0xd0 [ 57.463971][ T630] kasan_report+0xca/0x100 [ 57.463978][ T630] ? kobject_put+0xbb/0xd0 [ 57.463988][ T630] kobject_put+0xbb/0xd0 [ 57.463995][ T630] netdev_run_todo+0x5f0/0xc60 [ 57.464008][ T630] ? dev_ingress_queue_create+0x190/0x190 [ 57.464011][ T630] ? vlan_vid_del+0x30c/0x5e0 [ 57.464022][ T630] ? generic_xdp_install+0x410/0x410 [ 57.464029][ T630] ? vlan_vid_del+0x30c/0x5e0 [ 57.464036][ T630] rtnl_dellink+0x350/0xa30 [ 57.464046][ T630] ? valid_bridge_getlink_req.constprop.0+0x640/0x640 [ 57.464085][ T630] ? find_held_lock+0x2b/0x80 [ 57.464101][ T630] ? __lock_acquire+0x449/0x7e0 [ 57.464113][ T630] ? find_held_lock+0x2b/0x80 [ 57.464118][ T630] ? rtnetlink_rcv_msg+0x6e6/0xc00 [ 57.464123][ T630] ? __lock_release+0x5d/0x170 [ 57.464131][ T630] ? valid_bridge_getlink_req.constprop.0+0x640/0x640 [ 57.464137][ T630] rtnetlink_rcv_msg+0x709/0xc00 [ 57.464144][ T630] ? rtnl_port_fill+0x850/0x850 [ 57.464149][ T630] ? __lock_acquire+0x449/0x7e0 [ 57.464161][ T630] netlink_rcv_skb+0x121/0x340 [ 57.464171][ T630] ? rtnl_port_fill+0x850/0x850 [ 57.464177][ T630] ? netlink_ack+0xdd0/0xdd0 [ 57.464189][ T630] ? netlink_deliver_tap+0x13e/0x340 [ 57.464193][ T630] ? netlink_deliver_tap+0xc3/0x340 [ 57.464200][ T630] netlink_unicast+0x4aa/0x780 [ 57.464208][ T630] ? netlink_attachskb+0x810/0x810 [ 57.464215][ T630] ? __lock_acquire+0x449/0x7e0 [ 57.464225][ T630] netlink_sendmsg+0x714/0xbd0 [ 57.464233][ T630] ? netlink_unicast+0x780/0x780 [ 57.464239][ T630] ? __import_iovec+0x230/0x3b0 [ 57.464256][ T630] ? netlink_unicast+0x780/0x780 [ 57.464262][ T630] ____sys_sendmsg+0x3dd/0x890 [ 57.464278][ T630] ? get_timestamp.constprop.0+0x380/0x380 [ 57.464283][ T630] ? __copy_msghdr+0x3c0/0x3c0 [ 57.464297][ T630] ___sys_sendmsg+0xed/0x170 [ 57.464302][ T630] ? kasan_record_aux_stack+0x8c/0xa0 [ 57.464308][ T630] ? __call_rcu_common.constprop.0+0xa8/0x630 [ 57.464324][ T630] ? copy_msghdr_from_user+0x110/0x110 [ 57.464333][ T630] ? find_held_lock+0x2b/0x80 [ 57.464341][ T630] ? __lock_acquire+0x449/0x7e0 [ 57.464351][ T630] ? find_held_lock+0x2b/0x80 [ 57.464357][ T630] ? __virt_addr_valid+0x22a/0x450 [ 57.464374][ T630] ? __lock_release+0x5d/0x170 [ 57.464385][ T630] __sys_sendmsg+0x10b/0x1a0 [ 57.464390][ T630] ? __call_rcu_common.constprop.0+0x318/0x630 [ 57.464397][ T630] ? __sys_sendmsg_sock+0x20/0x20 [ 57.464411][ T630] ? rcu_is_watching+0x12/0xb0 [ 57.464418][ T630] do_syscall_64+0xc1/0xfd0 [ 57.464428][ T630] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 57.464442][ T630] RIP: 0033:0x7fc8a7bc01d7 [ 57.464450][ T630] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 57.464455][ T630] RSP: 002b:00007ffecadf6278 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 57.464467][ T630] RAX: ffffffffffffffda RBX: 00007ffecadf69a0 RCX: 00007fc8a7bc01d7 [ 57.464473][ T630] RDX: 0000000000000000 RSI: 00007ffecadf62e0 RDI: 0000000000000005 [ 57.464477][ T630] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 57.464480][ T630] R10: 00007fc8a7abcf60 R11: 0000000000000246 R12: 0000000000000002 [ 57.464482][ T630] R13: 00000000690df8e7 R14: 0000000000499600 R15: 0000000000000000 [ 57.464495][ T630] [ 57.464497][ T630] [ 57.479258][ T630] Allocated by task 472: [ 57.479395][ T630] kasan_save_stack+0x24/0x40 [ 57.479583][ T630] kasan_save_track+0x14/0x30 [ 57.479755][ T630] __kasan_kmalloc+0x7b/0x90 [ 57.479929][ T630] __kvmalloc_node_noprof+0x2e5/0x8e0 [ 57.480200][ T630] alloc_netdev_mqs+0x7d/0x1370 [ 57.480374][ T630] rtnl_create_link+0xa9e/0xe20 [ 57.480545][ T630] rtnl_newlink_create+0x203/0x770 [ 57.480733][ T630] __rtnl_newlink+0x231/0xa30 [ 57.481101][ T630] rtnl_newlink+0x693/0xa60 [ 57.481269][ T630] rtnetlink_rcv_msg+0x709/0xc00 [ 57.481435][ T630] netlink_rcv_skb+0x121/0x340 [ 57.481603][ T630] netlink_unicast+0x4aa/0x780 [ 57.481771][ T630] netlink_sendmsg+0x714/0xbd0 [ 57.481938][ T630] ____sys_sendmsg+0x3dd/0x890 [ 57.482114][ T630] ___sys_sendmsg+0xed/0x170 [ 57.482287][ T630] __sys_sendmsg+0x10b/0x1a0 [ 57.482456][ T630] do_syscall_64+0xc1/0xfd0 [ 57.482626][ T630] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 57.482837][ T630] [ 57.482930][ T630] Freed by task 630: [ 57.483161][ T630] kasan_save_stack+0x24/0x40 [ 57.483332][ T630] kasan_save_track+0x14/0x30 [ 57.483498][ T630] __kasan_save_free_info+0x3b/0x60 [ 57.483670][ T630] __kasan_slab_free+0x3f/0x60 [ 57.484031][ T630] kfree+0x21d/0x540 [ 57.484159][ T630] device_release+0x9c/0x210 [ 57.484343][ T630] kobject_cleanup+0xfe/0x360 [ 57.484515][ T630] netdev_run_todo+0x81f/0xc60 [ 57.484683][ T630] rtnl_dellink+0x350/0xa30 [ 57.484852][ T630] rtnetlink_rcv_msg+0x709/0xc00 [ 57.485029][ T630] netlink_rcv_skb+0x121/0x340 [ 57.485200][ T630] netlink_unicast+0x4aa/0x780 [ 57.485370][ T630] netlink_sendmsg+0x714/0xbd0 [ 57.485535][ T630] ____sys_sendmsg+0x3dd/0x890 [ 57.485706][ T630] ___sys_sendmsg+0xed/0x170 [ 57.485877][ T630] __sys_sendmsg+0x10b/0x1a0 [ 57.486052][ T630] do_syscall_64+0xc1/0xfd0 [ 57.486220][ T630] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 57.486427][ T630] [ 57.486521][ T630] The buggy address belongs to the object at ffff888004dbc000 [ 57.486521][ T630] which belongs to the cache kmalloc-4k of size 4096 [ 57.487036][ T630] The buggy address is located 1708 bytes inside of [ 57.487036][ T630] freed 4096-byte region [ffff888004dbc000, ffff888004dbd000) [ 57.487451][ T630] [ 57.487632][ T630] The buggy address belongs to the physical page: [ 57.487856][ T630] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888004db9000 pfn:0x4db8 [ 57.488307][ T630] head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 57.488561][ T630] flags: 0x80000000000240(workingset|head|node=0|zone=1) [ 57.488779][ T630] page_type: f5(slab) [ 57.488916][ T630] raw: 0080000000000240 ffff888001043700 ffff8880010410c8 ffff8880010410c8 [ 57.489344][ T630] raw: ffff888004db9000 0000000000020001 00000000f5000000 0000000000000000 [ 57.489633][ T630] head: 0080000000000240 ffff888001043700 ffff8880010410c8 ffff8880010410c8 [ 57.490051][ T630] head: ffff888004db9000 0000000000020001 00000000f5000000 0000000000000000 [ 57.490349][ T630] head: 0080000000000003 ffffea0000136e01 00000000ffffffff 00000000ffffffff [ 57.490652][ T630] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 57.491153][ T630] page dumped because: kasan: bad access detected [ 57.491368][ T630] [ 57.491454][ T630] Memory state around the buggy address: [ 57.491716][ T630] ffff888004dbc580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 57.491973][ T630] ffff888004dbc600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 57.492226][ T630] >ffff888004dbc680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 57.492566][ T630] ^ [ 57.492737][ T630] ffff888004dbc700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 57.492981][ T630] ffff888004dbc780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 57.493234][ T630] ================================================================== [ 57.494002][ T630] Disabling lock debugging due to kernel taint [ 57.494348][ T630] ------------[ cut here ]------------ [ 57.494513][ T630] refcount_t: underflow; use-after-free. [ 57.494750][ T630] WARNING: CPU: 0 PID: 630 at lib/refcount.c:28 refcount_warn_saturate+0x16f/0x1b0 [ 57.495174][ T630] Modules linked in: sch_tbf bridge stp llc act_gact cls_flower sch_ingress 8021q vrf veth [ 57.495532][ T630] CPU: 0 UID: 0 PID: 630 Comm: ip Tainted: G B 6.18.0-rc4-virtme #1 PREEMPT(full) [ 57.495868][ T630] Tainted: [B]=BAD_PAGE [ 57.496008][ T630] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 57.496236][ T630] RIP: 0010:refcount_warn_saturate+0x16f/0x1b0 [ 57.496452][ T630] Code: 7d 93 02 80 fb 01 0f 87 bb 99 d9 fe 83 e3 01 0f 85 51 ff ff ff c6 05 a8 7d 93 02 01 90 48 c7 c7 60 8d 45 b3 e8 32 bf 18 ff 90 <0f> 0b 90 90 e9 33 ff ff ff 48 89 df e8 b0 63 a1 ff e9 ba fe ff ff [ 57.497071][ T630] RSP: 0018:ffffc900009e71f0 EFLAGS: 00010286 [ 57.497284][ T630] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 57.497556][ T630] RDX: 0000000000000002 RSI: 0000000000000004 RDI: 0000000000000001 [ 57.497817][ T630] RBP: 0000000000000003 R08: 0000000000000000 R09: fffffbfff67be134 [ 57.498088][ T630] R10: 0000000000000003 R11: ffffc900009e6d80 R12: 0000000000000001 [ 57.498341][ T630] R13: dffffc0000000000 R14: dead000000000122 R15: dead000000000100 [ 57.498637][ T630] FS: 00007fc8a79f2800(0000) GS:ffff888080ff2000(0000) knlGS:0000000000000000 [ 57.498935][ T630] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.499194][ T630] CR2: 0000557dc8025dec CR3: 000000000aa95006 CR4: 0000000000772ef0 [ 57.499448][ T630] PKRU: 55555554 [ 57.499578][ T630] Call Trace: [ 57.499716][ T630] [ 57.499818][ T630] netdev_run_todo+0x5f0/0xc60 [ 57.499996][ T630] ? dev_ingress_queue_create+0x190/0x190 [ 57.500179][ T630] ? vlan_vid_del+0x30c/0x5e0 [ 57.500343][ T630] ? generic_xdp_install+0x410/0x410 [ 57.500513][ T630] ? vlan_vid_del+0x30c/0x5e0 [ 57.500679][ T630] rtnl_dellink+0x350/0xa30 [ 57.500852][ T630] ? valid_bridge_getlink_req.constprop.0+0x640/0x640 [ 57.501091][ T630] ? find_held_lock+0x2b/0x80 [ 57.501264][ T630] ? __lock_acquire+0x449/0x7e0 [ 57.501525][ T630] ? find_held_lock+0x2b/0x80 [ 57.501688][ T630] ? rtnetlink_rcv_msg+0x6e6/0xc00 [ 57.501858][ T630] ? __lock_release+0x5d/0x170 [ 57.502037][ T630] ? valid_bridge_getlink_req.constprop.0+0x640/0x640 [ 57.502250][ T630] rtnetlink_rcv_msg+0x709/0xc00 [ 57.502416][ T630] ? rtnl_port_fill+0x850/0x850 [ 57.502591][ T630] ? __lock_acquire+0x449/0x7e0 [ 57.502763][ T630] netlink_rcv_skb+0x121/0x340 [ 57.503040][ T630] ? rtnl_port_fill+0x850/0x850 [ 57.503302][ T630] ? netlink_ack+0xdd0/0xdd0 [ 57.503472][ T630] ? netlink_deliver_tap+0x13e/0x340 [ 57.503637][ T630] ? netlink_deliver_tap+0xc3/0x340 [ 57.503807][ T630] netlink_unicast+0x4aa/0x780 [ 57.504091][ T630] ? netlink_attachskb+0x810/0x810 [ 57.504264][ T630] ? __lock_acquire+0x449/0x7e0 [ 57.504432][ T630] netlink_sendmsg+0x714/0xbd0 [ 57.504692][ T630] ? netlink_unicast+0x780/0x780 [ 57.504859][ T630] ? __import_iovec+0x230/0x3b0 [ 57.505037][ T630] ? netlink_unicast+0x780/0x780 [ 57.505200][ T630] ____sys_sendmsg+0x3dd/0x890 [ 57.505453][ T630] ? get_timestamp.constprop.0+0x380/0x380 [ 57.505662][ T630] ? __copy_msghdr+0x3c0/0x3c0 [ 57.505833][ T630] ___sys_sendmsg+0xed/0x170 [ 57.506003][ T630] ? kasan_record_aux_stack+0x8c/0xa0 [ 57.506268][ T630] ? __call_rcu_common.constprop.0+0xa8/0x630 [ 57.506473][ T630] ? copy_msghdr_from_user+0x110/0x110 [ 57.506638][ T630] ? find_held_lock+0x2b/0x80 [ 57.506808][ T630] ? __lock_acquire+0x449/0x7e0 [ 57.507079][ T630] ? find_held_lock+0x2b/0x80 [ 57.507251][ T630] ? __virt_addr_valid+0x22a/0x450 [ 57.507430][ T630] ? __lock_release+0x5d/0x170 [ 57.507598][ T630] __sys_sendmsg+0x10b/0x1a0 [ 57.507859][ T630] ? __call_rcu_common.constprop.0+0x318/0x630 [ 57.508070][ T630] ? __sys_sendmsg_sock+0x20/0x20 [ 57.508235][ T630] ? rcu_is_watching+0x12/0xb0 [ 57.508396][ T630] do_syscall_64+0xc1/0xfd0 [ 57.508650][ T630] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 57.508858][ T630] RIP: 0033:0x7fc8a7bc01d7 [ 57.509041][ T630] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 57.509741][ T630] RSP: 002b:00007ffecadf6278 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 57.510103][ T630] RAX: ffffffffffffffda RBX: 00007ffecadf69a0 RCX: 00007fc8a7bc01d7 [ 57.510369][ T630] RDX: 0000000000000000 RSI: 00007ffecadf62e0 RDI: 0000000000000005 [ 57.510622][ T630] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 57.510968][ T630] R10: 00007fc8a7abcf60 R11: 0000000000000246 R12: 0000000000000002 [ 57.511234][ T630] R13: 00000000690df8e7 R14: 0000000000499600 R15: 0000000000000000 [ 57.511492][ T630] [ 57.511717][ T630] irq event stamp: 41855 [ 57.511850][ T630] hardirqs last enabled at (41855): [] finish_task_switch.isra.0+0x245/0x960 [ 57.512198][ T630] hardirqs last disabled at (41854): [] __schedule+0x94a/0x1b10 [ 57.512598][ T630] softirqs last enabled at (41774): [] handle_softirqs+0x352/0x610 [ 57.512904][ T630] softirqs last disabled at (41769): [] irq_exit_rcu+0xab/0x100 [ 57.513287][ T630] ---[ end trace 0000000000000000 ]--- [ 57.707706][ T636] veth2.10: left allmulticast mode [ 57.707944][ T636] veth2: left allmulticast mode [ 57.708174][ T636] veth2.10: left promiscuous mode [ 57.708374][ T636] veth2: left promiscuous mode [ 57.708888][ T636] br10: port 2(veth2.10) entered disabled state [ 58.203009][ T646] veth1.11: left allmulticast mode [ 58.203392][ T646] veth1.11: left promiscuous mode [ 58.204165][ T646] br11: port 1(veth1.11) entered disabled state [ 58.474659][ T652] veth1.10: left allmulticast mode [ 58.474878][ T652] veth1: left allmulticast mode [ 58.475101][ T652] veth1.10: left promiscuous mode [ 58.475273][ T652] veth1: left promiscuous mode [ 58.475768][ T652] br10: port 1(veth1.10) entered disabled state